Summary & Overview
Single Level Spinal Fusion Except Cervical with MCC or Custom-Made Device: Inpatient Reimbursement Overview
DRG 450 encompasses single level spinal fusion procedures outside the cervical region when a Major Complication or Comorbidity exists or a custom-made anatomically designed interbody fusion device is used, defining a higher-complexity inpatient cohort. This classification matters for inpatient reimbursement because it increases Medicare payment weights tied to surgical complexity, comorbidity burden, and specialized implant utilization.
DRG 450 Overview
DRG 450 covers single level spinal fusion procedures performed on vertebral levels other than the cervical spine when a Major Complication or Comorbidity is present or when a custom-made anatomically designed interbody fusion device is used. This Diagnosis-Related Group captures higher-resource inpatient stays driven by the complexity of fusion surgery combined with significant comorbid illness or specialized implant use. It matters for Medicare payment because the presence of a Major Complication or Comorbidity or the use of a custom interbody device increases the relative weight and payment intensity under Medicare inpatient prospective payment systems. Accurate coding and documentation determine whether a case is assigned to this Diagnosis-Related Group and thus the appropriate inpatient reimbursement.